Re: How should we measure coil efficiency, was neon vs. potenti

From: 	Esondrmn-at-aol-dot-com[SMTP:Esondrmn-at-aol-dot-com]
Sent: 	Friday, August 01, 1997 7:12 AM
To: 	tesla-at-pupman-dot-com
Subject: 	Re: How should we measure coil efficiency, was neon vs. potenti

In a message dated 97-08-01 05:51:06 EDT, you write:

   Wes, All -
   The Tesla coil operating frequency appears to have an optimum frequency
 because large coils use low frequencies and small coils use high
 frequencies. This means a coil could be improved by increasing the operating
 freq if it is operating below the optimum and decreasing the freq if it is
 operating abuve the optimum.
   I have collected operating freqency and input power data from dozens of
 actual coils built in the past. The data was normilized and converted into
 an equation using regression math. The frequency/power equation is
       KWH = 3032.5 x W^-.2767 - 96.4     W = watts input
   This equation represents what the typical coiler used for operating freqs
 in the past with successful coils. This equation would be a good place to
 start our designs today until enough new data can be collected to bring it
 up to date.
   The primary and secondary tank parameters could then be chosen using the
        KHZ = 1/(6.283 sqrt(LC))
   It is true that there are many other parameters that affect output,
 however, having a place to start is better than pulling a frequency out of
 the air for no apparent reason. In this way we will be using the experience
 of the old timers!?
   This system can be easily tested by designing the coil so it could be
 operated at optimun frequency with adjustments for about plus or minus 20%.
 The length of the spark could then be used as a measure of performance.
    Comments welcomed.
     John Couture  


You have lost me here somewhere.  Are you saying that for a given secondary
and toroid combination that is self resonant at frequency x - that there is a
different frequency for this coil that will be more efficient???  

Ed Sonderman